Obs. : 2019-08-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.453e+11
Venus      3.437e+11
Earth      3.483e+11
Mars       3.437e+11
Jupiter    3.440e+11
Saturn     3.460e+11
Uranus     3.542e+11
Neptune    3.483e+11
Pluto      3.460e+11